CROSS-REFERENCE TO RELATED APPLICATION

This is a continuation of International Application No. PCT/CN2017/000732, filed on Dec. 12, 2017, which claims the priority benefits of China Application No. 201710153588.8, filed on Mar. 15, 2017. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification.

FIELD OF THE INVENTION

The present application relates to the field of railway switches, especially to a core-inlaid high manganese steel frog structure.

BACKGROUND OF THE INVENTION

Steel frog is an essential part of railway switch system, in which high manganese steel frog has been widely used worldwide. With growing development of railway operating mileage in China, demand for high manganese steel frog is improving. Furthermore, improvements on carrying capacity and speed also accelerate wastage of high manganese steel frog, thus shortening service life of the steel frog. Research finds that damages to the high manganese steel frog are generally partial instead of overall, and there exists a local defective space in which surface of the high manganese steel frog is liable to be exfoliated and peeled, which degrades normal use thereof. Furthermore, the high manganese steel frog is hard to be renovated and may be scrapped simply due to partial damage, which leads to significant waste.

SUMMARY OF THE INVENTION

The present application intends to provide a core-inlaid high manganese steel frog for dealing with at least one issue existing in the prior art, which saves the cost and meets the demands at the same cost by switching the damaged parts conveniently.

Technical solutions are as follows:

A core-inlaid high manganese steel frog structure includes a high manganese steel frog body and an inlaid core, in which the high manganese steel frog body is molded in one unit, and includes a swing track connecting section, a frog central section and a frog-and-track connecting section, the wing track connecting section and the frog-and-track connecting section are respectively arranged on front and rear ends of the frog central section; a mounting groove for cooperatively mounting the inlaid core is arranged in front of the frog central section; the high manganese steel frog body and the inlaid core are detachably connected.

The inlaid core includes an upper connecting section which has a triangle top view, a lower connecting section which is connected with the mounting groove, in which an arc transition is arranged between a tip of the upper connecting section and an upper end surface of the lower connecting section; a rear end surface of the upper connecting section is connected with a front end surface of the frog central section; an upper end surface of the inlaid core and an upper end surface of the frog central section are in the same plane.

A left side surface and a right side surface of the lower connecting section are inclined from top to bottom and from outside to inside; an angle of 2° to 4° is formed between the side surfaces and vertical direction, by which the lower connecting section is easy to be mounted into and tightly fitted with the mounting groove, forming a contact slope and improving stability.

The rear end surface of the inlaid core is inclined from top to bottom and from inside to outside; an angle is formed 2° to 4° between the rear end surface of the inlaid core and vertical direction, by which the upper connecting section is tightly fitted with a front end surface of the frog central section, which ensures smoothness and stability of the transition between the inlaid core and the frog central section; the lower connecting section is tightly fitted with the mounting groove; a contact inclined surface is formed, which keeps the inlaid core from moving upwards and downwards while the car is passing over.

Bolt holes are arranged along length direction of the mounting groove at intervals; bolt mounting holes corresponding to the bolt holes are arranged on lower end surface of the inlaid core; the inlaid core and the steel frog body are fixedly connected by bolts, which is convenient for disassembly and assembly, and for maintenance and replacement in case of damage, which further save the cost.

An anti-rotation shim and a spring gasket are arranged between the bolt and the high manganese steel frog body, which keep the bolt from rotating, and ensure connection stability between the inlaid core and the high manganese steel frog body.

Arc transitions are respectively arranged between left and right sides of the upper connecting section and the upper end surface of the upper connecting section, and between left and right sides of the upper connecting section and the upper end surface of the low connecting section.

A width of a read end of the upper end surface of the upper connecting section is set to be 60 mm-110 mm as a standard for design of the mounting groove and the inlaid core.

Left and right sides of the mounting groove are respectively arranged with a flangeway; after the lower connecting section is mounted into the mounting groove, left and right side contours of the upper end surface of the lower connecting section are respectively set to coincide with a center line of the bottom of the flangeway.

Beneficial effects of the present application include:

1. Since damages for the frog are generally partial instead of overall and there exists a local defective space, in the present application, the high-manganese steel frog body can be detachably connected to the inlaid core, which facilitates replacement of vulnerable parts, saves cost, and meets user requirements.

2. Consider that the inlaid core is a vulnerable part, the material and production procedure for the high-manganese steel frog body can be different from those for the inlaid core, which helps further improve the performance of the inlaid core, and reduce wear capacity and rate.

3. The rear end surface of the inlaid core is inclined from top to bottom and from inside to outside to form the second contact inclined surface, which keeps the inlaid core from moving upwards and downwards while the car is passing over. A left side surface and a right side surface of the lower connecting section are inclined from top to bottom and from outside to inside to form the first contact inclined surface, which is helpful for replacing the inlaid core. The present application is appropriate in design and is safe for use.

Above all, in comparison with the prior art, the present application has prominent substantive features, and represents notable progress and beneficial effects of the embodiments described herein are obvious.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural view of the present application;

FIG. 2 is a top view of the inlaid core of the present application;

FIG. 3 is a front view of the inlaid core of the present application;

FIG. 4 is a half section cut view of the inlaid core of the present application;

FIG. 5 is a top view of the steel frog body of the present application;

FIG. 6 is a front view of the steel frog body of the present application;

FIG. 7 is a D-direction section cut view of FIG. 1;

FIG. 8 is an enlarged view of FIG. 7 at position B;

FIG. 9 is an E-direction section cut view of FIG. 1;

FIG. 10 is an F-direction section cut view of FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

In order to help understand the present application, embodiments of the present application would be described in detailed in accompany with the drawings.

Specific Embodiments

A core-inlaid high manganese steel frog structure includes a high manganese steel frog body 1 and an inlaid core 2. The high manganese steel frog body 1 is molded in one unit, and includes a swing track connecting section, a frog central section 3 and a frog-and-track connecting section 10. The wing track connecting section and the frog-and-track connecting section 10 are respectively arranged on front and rear ends of the frog central section 3. A mounting groove 5 for cooperatively mounting the inlaid core 2 is arranged in front of the frog central section 3. The high manganese steel frog body 1 and the inlaid core 2 are detachably connected.

The inlaid core 2 includes an upper connecting section 2-3 which has a triangle top view, a lower connecting section 2-2 which is connected with the mounting groove 5. An arc transition 2-1 is arranged between a tip of the upper connecting section 2-3 and an upper end surface of the lower connecting section 2-2. A rear end surface of the upper connecting section 2-3 is connected with a front end surface of the frog central section 3. An upper end surface of the inlaid core 2 and an upper end surface of the frog central section 3 are in the same plane. A left side surface and a right side surface of the lower connecting section 2-2 are inclined from top to bottom and from outside to inside, thus forming a first contact slope 2-6. A first angle 2-7 of the first contact slope 2-6 with respect to vertical direction is 2° to 4°. Through the design, the lower connecting section 2-2 is easy to be mounted into the mounting groove 5, which is convenient for replacing a damaged inlaid core 2. Rear end surfaces of the inlaid core 2 includes a rear end surface of the upper connecting section 2-3 and a rear end surface of the lower connecting section 2-2. In the present embodiment, the rear end surface of the upper connecting section 2-3 is disposed coincidentally with the rear end surface of the lower connecting section 2-2. The rear end surface of the inlaid core 2 is inclined from top to bottom and from inside to outside, foil ling a second contact inclined surface 2-4. A second angle 2-8 of the second contact slope 2-4 with respect to vertical direction is 2° to 4°. In the present application, the second angel 2-8 is set to be 3°, whereas the first angle 2-7 is also set to be 3°. Through this design, the upper connecting section is tightly fitted with a front end surface of the frog central section 3, which ensures smoothness and stability of the transition between the inlaid core 2 and the frog central section 3. The lower connecting section 2-2 is tightly fitted with the mounting groove 5, which keeps the inlaid core 2 from moving upwards and downwards while the car is passing over.

A width of a read end of the upper end surface of the upper connecting section 2-3 is set to be 60 mm to 110 mm. The arc transitions 2-1 are respectively arranged between left and right sides of the upper connecting section 2-3 and the upper end surface of the upper connecting section 2-3, and between left and right sides of the upper connecting section 2-3 and the upper end surface of the lower connecting section 2-2. In the present embodiment, the width of the read end of the upper end surface of the upper connecting section 2-3 is set to be 80 mm.

As shown in FIG. 7, left and right sides of the mounting groove 5 are respectively arranged with a flangeway 11. After the lower connecting section 2-2 is mounted into the mounting groove 5, the left and right side contours of the upper end surface of the lower connecting section 2-2 are respectively set to coincide with a center line of the bottom of the flangeway 11. During preparation, length and size of the lower connecting section 2-2 can be adjusted accordingly, such that the size of the lower connecting section 2-2 can be easy to be processed, which reduces error remarkably.

First bolt holes 6 are arranged along length direction of the mounting groove 5 at intervals. First bolt mounting holes 2-5 corresponding to the first bolt holes 6 are arranged on lower end surface of the inlaid core 2. The inlaid core 2 and the high manganese steel frog body 1 are fixedly connected to each other by bolts 7. An anti-rotation shim 9 and a spring gasket 8 are arranged between the bolt 7 and the high manganese steel frog body 1. Two side walls of the high manganese steel frog body 1 are provided with bolt mounting holes 4 for connecting with rails. The bolt mounting holes 4 are located below the bottom surface of the mounting groove 5.

Damages for the frog are generally partial instead of overall and there exists a local defective space. In the present application, the high-manganese steel frog body 1 can be detachably connected to the inlaid core 2, which facilitates replacement of vulnerable parts, saves cost, and meets user requirements. In addition, consider that the inlaid core 2 is a vulnerable part, the material and production procedure for the high-manganese steel frog body 1 can be different from those for the inlaid core 2, which helps further improve the performance of the inlaid core 2, and reduce wear capacity and rate. The invention is reasonable in design, and is safe and reliable for use and worthy of promotion.

The above description and embodiments are not limitative of the present application. Any change, modification, addition or replacement made by those skilled in the art within substantial scope of the present invention shall also be deemed as falling into protection scope of the present invention.